pragma solidity >=0.4.1 <=0.4.20;// Incompatible compiler version... please select one stated within pragma solidity or use different oraclizeAPI version
contract OraclizeI {
    address public cbAddress;
    function query(uint _timestamp, string _datasource, string _arg) payable returns (bytes32 _id);
    function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) payable returns (bytes32 _id);
    function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) payable returns (bytes32 _id);
    function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) payable returns (bytes32 _id);
    function queryN(uint _timestamp, string _datasource, bytes _argN) payable returns (bytes32 _id);
    function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) payable returns (bytes32 _id);
    function getPrice(string _datasource) returns (uint _dsprice);
    function getPrice(string _datasource, uint gaslimit) returns (uint _dsprice);
    function useCoupon(string _coupon);
    function setProofType(byte _proofType);
    function setConfig(bytes32 _config);
    function setCustomGasPrice(uint _gasPrice);
}
contract OraclizeAddrResolverI {
    function getAddress() returns (address _addr);
}
contract usingOraclize {
    uint constant day = 60*60*24;
    uint constant week = 60*60*24*7;
    uint constant month = 60*60*24*30;
    byte constant proofType_NONE = 0x00;
    byte constant proofType_TLSNotary = 0x10;
    byte constant proofStorage_IPFS = 0x01;
    uint8 constant networkID_auto = 0;
    uint8 constant networkID_mainnet = 1;
    uint8 constant networkID_testnet = 2;
    uint8 constant networkID_morden = 2;
    uint8 constant networkID_consensys = 161;

    OraclizeAddrResolverI OAR;

    OraclizeI oraclize;
    modifier oraclizeAPI {
        if((address(OAR)==0)||(getCodeSize(address(OAR))==0)) oraclize_setNetwork(networkID_auto);
        oraclize = OraclizeI(OAR.getAddress());
        _;
    }
    modifier coupon(string code){
        oraclize = OraclizeI(OAR.getAddress());
        oraclize.useCoupon(code);
        _;
    }

    function oraclize_setNetwork(uint8 networkID) internal returns(bool){
        if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet
            OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed);
            return true;
        }
        if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet
            OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1);
            return true;
        }
        if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet
            OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e);
            return true;
        }
        if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge
            OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475);
            return true;
        }
        if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide
            OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF);
            return true;
        }
        if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity
            OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA);
            return true;
        }
        return false;
    }

    function __callback(bytes32 myid, string result) {
        __callback(myid, result, new bytes(0));
    }
    function __callback(bytes32 myid, string result, bytes proof) {
    }

    function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){
        return oraclize.getPrice(datasource);
    }

    function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){
        return oraclize.getPrice(datasource, gaslimit);
    }

    function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource);
        if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
        return oraclize.query.value(price)(0, datasource, arg);
    }
    function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource);
        if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
        return oraclize.query.value(price)(timestamp, datasource, arg);
    }
    function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource, gaslimit);
        if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
        return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit);
    }
    function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource, gaslimit);
        if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
        return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit);
    }
    function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource);
        if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
        return oraclize.query2.value(price)(0, datasource, arg1, arg2);
    }
    function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource);
        if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
        return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2);
    }
    function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource, gaslimit);
        if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
        return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit);
    }
    function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource, gaslimit);
        if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
        return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit);
    }
    function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource);
        if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
        bytes memory args = stra2cbor(argN);
        return oraclize.queryN.value(price)(0, datasource, args);
    }
    function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource);
        if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
        bytes memory args = stra2cbor(argN);
        return oraclize.queryN.value(price)(timestamp, datasource, args);
    }
    function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource, gaslimit);
        if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
        bytes memory args = stra2cbor(argN);
        return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);
    }
    function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
        uint price = oraclize.getPrice(datasource, gaslimit);
        if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
        bytes memory args = stra2cbor(argN);
        return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);
    }
    function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](1);
        dynargs[0] = args[0];
        return oraclize_query(datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](1);
        dynargs[0] = args[0];
        return oraclize_query(timestamp, datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](1);
        dynargs[0] = args[0];
        return oraclize_query(timestamp, datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](1);
        dynargs[0] = args[0];
        return oraclize_query(datasource, dynargs, gaslimit);
    }

    function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](2);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        return oraclize_query(datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](2);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        return oraclize_query(timestamp, datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](2);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        return oraclize_query(timestamp, datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](2);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        return oraclize_query(datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](3);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        return oraclize_query(datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](3);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        return oraclize_query(timestamp, datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](3);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        return oraclize_query(timestamp, datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](3);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        return oraclize_query(datasource, dynargs, gaslimit);
    }

    function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](4);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        return oraclize_query(datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](4);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        return oraclize_query(timestamp, datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](4);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        return oraclize_query(timestamp, datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](4);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        return oraclize_query(datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](5);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        dynargs[4] = args[4];
        return oraclize_query(datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](5);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        dynargs[4] = args[4];
        return oraclize_query(timestamp, datasource, dynargs);
    }
    function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](5);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        dynargs[4] = args[4];
        return oraclize_query(timestamp, datasource, dynargs, gaslimit);
    }
    function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
        string[] memory dynargs = new string[](5);
        dynargs[0] = args[0];
        dynargs[1] = args[1];
        dynargs[2] = args[2];
        dynargs[3] = args[3];
        dynargs[4] = args[4];
        return oraclize_query(datasource, dynargs, gaslimit);
    }

    function oraclize_cbAddress() oraclizeAPI internal returns (address){
        return oraclize.cbAddress();
    }
    function oraclize_setProof(byte proofP) oraclizeAPI internal {
        return oraclize.setProofType(proofP);
    }
    function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal {
        return oraclize.setCustomGasPrice(gasPrice);
    }
    function oraclize_setConfig(bytes32 config) oraclizeAPI internal {
        return oraclize.setConfig(config);
    }

    function getCodeSize(address _addr) constant internal returns(uint _size) {
        assembly {
            _size := extcodesize(_addr)
        }
    }

    function parseAddr(string _a) internal returns (address){
        bytes memory tmp = bytes(_a);
        uint160 iaddr = 0;
        uint160 b1;
        uint160 b2;
        for (uint i=2; i<2+2*20; i+=2){
            iaddr *= 256;
            b1 = uint160(tmp[i]);
            b2 = uint160(tmp[i+1]);
            if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87;
            else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48;
            if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87;
            else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48;
            iaddr += (b1*16+b2);
        }
        return address(iaddr);
    }

    function strCompare(string _a, string _b) internal returns (int) {
        bytes memory a = bytes(_a);
        bytes memory b = bytes(_b);
        uint minLength = a.length;
        if (b.length < minLength) minLength = b.length;
        for (uint i = 0; i < minLength; i ++)
            if (a[i] < b[i])
                return -1;
            else if (a[i] > b[i])
                return 1;
        if (a.length < b.length)
            return -1;
        else if (a.length > b.length)
            return 1;
        else
            return 0;
    }

    function indexOf(string _haystack, string _needle) internal returns (int) {
        bytes memory h = bytes(_haystack);
        bytes memory n = bytes(_needle);
        if(h.length < 1 || n.length < 1 || (n.length > h.length))
            return -1;
        else if(h.length > (2**128 -1))
            return -1;
        else
        {
            uint subindex = 0;
            for (uint i = 0; i < h.length; i ++)
            {
                if (h[i] == n[0])
                {
                    subindex = 1;
                    while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex])
                    {
                        subindex++;
                    }
                    if(subindex == n.length)
                        return int(i);
                }
            }
            return -1;
        }
    }

    function strConcat(string _a, string _b, string _c, string _d, string _e) internal returns (string) {
        bytes memory _ba = bytes(_a);
        bytes memory _bb = bytes(_b);
        bytes memory _bc = bytes(_c);
        bytes memory _bd = bytes(_d);
        bytes memory _be = bytes(_e);
        string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length);
        bytes memory babcde = bytes(abcde);
        uint k = 0;
        for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i];
        for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i];
        for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i];
        for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i];
        for (i = 0; i < _be.length; i++) babcde[k++] = _be[i];
        return string(babcde);
    }

    function strConcat(string _a, string _b, string _c, string _d) internal returns (string) {
        return strConcat(_a, _b, _c, _d, "");
    }

    function strConcat(string _a, string _b, string _c) internal returns (string) {
        return strConcat(_a, _b, _c, "", "");
    }

    function strConcat(string _a, string _b) internal returns (string) {
        return strConcat(_a, _b, "", "", "");
    }

    // parseInt
    function parseInt(string _a) internal returns (uint) {
        return parseInt(_a, 0);
    }

    // parseInt(parseFloat*10^_b)
    function parseInt(string _a, uint _b) internal returns (uint) {
        bytes memory bresult = bytes(_a);
        uint mint = 0;
        bool decimals = false;
        for (uint i=0; i<bresult.length; i++){
            if ((bresult[i] >= 48)&&(bresult[i] <= 57)){
                if (decimals){
                   if (_b == 0) break;
                    else _b--;
                }
                mint *= 10;
                mint += uint(bresult[i]) - 48;
            } else if (bresult[i] == 46) decimals = true;
        }
        if (_b > 0) mint *= 10**_b;
        return mint;
    }

    function uint2str(uint i) internal returns (string){
        if (i == 0) return "0";
        uint j = i;
        uint len;
        while (j != 0){
            len++;
            j /= 10;
        }
        bytes memory bstr = new bytes(len);
        uint k = len - 1;
        while (i != 0){
            bstr[k--] = byte(48 + i % 10);
            i /= 10;
        }
        return string(bstr);
    }

    function stra2cbor(string[] arr) internal returns (bytes) {
            uint arrlen = arr.length;

            // get correct cbor output length
            uint outputlen = 0;
            bytes[] memory elemArray = new bytes[](arrlen);
            for (uint i = 0; i < arrlen; i++) {
                elemArray[i] = (bytes(arr[i]));
                outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
            }
            uint ctr = 0;
            uint cborlen = arrlen + 0x80;
            outputlen += byte(cborlen).length;
            bytes memory res = new bytes(outputlen);

            while (byte(cborlen).length > ctr) {
                res[ctr] = byte(cborlen)[ctr];
                ctr++;
            }
            for (i = 0; i < arrlen; i++) {
                res[ctr] = 0x5F;
                ctr++;
                for (uint x = 0; x < elemArray[i].length; x++) {
                    // if there's a bug with larger strings, this may be the culprit
                    if (x % 23 == 0) {
                        uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
                        elemcborlen += 0x40;
                        uint lctr = ctr;
                        while (byte(elemcborlen).length > ctr - lctr) {
                            res[ctr] = byte(elemcborlen)[ctr - lctr];
                            ctr++;
                        }
                    }
                    res[ctr] = elemArray[i][x];
                    ctr++;
                }
                res[ctr] = 0xFF;
                ctr++;
            }
            return res;
        }
}
/* =========================================================================================================*/
/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
    function mul(uint256 a, uint256 b) internal pure returns(uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        assert(c / a == b);
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns(uint256) {
        // assert(b > 0); // Solidity automatically throws when dividing by 0
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns(uint256) {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns(uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }
}

contract ERC20 {
    function totalSupply()public view returns(uint total_Supply);
    function balanceOf(address who)public view returns(uint256);
    function allowance(address owner, address spender)public view returns(uint);
    function transferFrom(address from, address to, uint value)public returns(bool ok);
    function approve(address spender, uint value)public returns(bool ok);
    function transfer(address to, uint value)public returns(bool ok);
    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

/*
** OutCloud Contract begins here 
**/
contract OutCloud is ERC20, usingOraclize {
    using SafeMath for uint256;
    uint ETHUSD;
    uint _totalsupply = 1200000000 * 10 ** 18; // 1.2 Billion OUT Coins
    uint currentTokenPriceFactor;
    uint256 no_of_tokens;
    uint256 total_token;
    uint256 public ico_startdate;
    uint256 public preico_startdate;
    uint256 public preico_enddate;
    uint256 constant public ETH_DECIMALS = 10 ** 18;
    uint256 ethreceived;
    uint256 TotalICOSupply;
    uint256 TotalPREICOSupply;
    uint256 ReservedSupplies;
    uint256 minContribution = 1; // 1 USD  (1 USD = 100 cents) 
    uint256 rate;
    uint256 weiAmount;
    bool stopped = false;
    bool public lockstatus;
    string public constant name = "OutCloud";
    string public constant symbol = "OUT";
    string public ethereum2USDprice;
    address sen;
    address public owner;
    address public wallet; // address to receive ether from smart contract
    mapping(address => uint) balances;
    mapping(address => mapping(address => uint)) allowed;
    event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
    event LogPriceUpdated(string price);
    event LogNewOraclizeQuery(string description);
    enum Stages {
        NOTSTARTED,
        PREICO,
        ICO,
        ENDED
    }
    Stages public stage;
    
    modifier atStage(Stages _stage) {
        require (stage == _stage);
        _;
    }

    modifier onlyOwner(){
        require (msg.sender == owner);
     _;
    }
  
    function OutCloud(address _owner, address _wallet) public {
        owner = _owner;
		wallet = _wallet;
        TotalICOSupply = 400000000 * 10 ** 18;
        TotalPREICOSupply = 300000000 * 10 ** 18;
        ReservedSupplies = 500000000 * 10 ** 18;
        balances[this] = _totalsupply;  // 500 Million given to owner
        stage = Stages.NOTSTARTED;
        lockstatus = true;
        Transfer(0, this, _totalsupply);
    }
 
    function () public payable {
        buyTokens();
    }
    function __callback(bytes32 myid, string result) {
    if (msg.sender != oraclize_cbAddress()) revert();
        ethereum2USDprice = result;
        ETHUSD = parseInt(result,0);
        LogPriceUpdated(result);
        if(ETHUSD > 0){
            _pro(sen, weiAmount);
        }
    }

    function updatePrice() public payable {
        if (oraclize_getPrice("json(https://api.kraken.com/0/public/Ticker?pair=ETHUSD).result.XETHZUSD.c.0") > this.balance) {
            LogNewOraclizeQuery("Oraclize query was NOT sent, please add some ETH to cover for the query fee");
        revert();
            
        }
        else {
        LogNewOraclizeQuery("Oraclize query was sent, standing by for the answer..");
        oraclize_query("URL","json(https://api.kraken.com/0/public/Ticker?pair=ETHUSD).result.XETHZUSD.c.0");
        }
    }

    function buyTokens() public payable {
        sen = msg.sender;
        weiAmount = msg.value;
        _preValidatePurchase(sen, weiAmount);
        updatePrice();
    }
    
    function _pro (address _beneficiary, uint256 weiAmount) internal {
        // calculate token amount to sell
        uint256 tokens = _getTokenAmount(weiAmount);
        // update state
        ethreceived = ethreceived.add(weiAmount);

        _processPurchase(_beneficiary, tokens);
        TokenPurchase(this, _beneficiary, weiAmount, tokens);

    //    _forwardFunds();
        
    }
    
    function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal view {
      //  require(_weiAmount >= _calculateMinimumprice());
        require(stage != Stages.ENDED);
        require(!stopped);
        require(_beneficiary != address(0x0));
        require(_weiAmount != 0);
        require(_weiAmount >= (minContribution.mul(ETH_DECIMALS)).div(300));
    }
    /* calculates the minimum requirements of weis (10USD) according to current rate of ETH TO USD*/
   /* function _calculateMinimumprice() internal view returns (uint256){
        uint256 minimumWeisRequired;
        if(ETHUSD > 0){minimumWeisRequired = (minContribution.mul(ETH_DECIMALS)).div(ETHUSD);}
        else{minimumWeisRequired = (minContribution.mul(ETH_DECIMALS)).div(300);}
        return minimumWeisRequired;
    } */
    
    function _getTokenAmount(uint256 _weiAmount) internal returns (uint256) {
        _setRate();
        return _weiAmount.mul(rate);
    }
    
    function _setRate() internal{
        uint256 ETHUSD = parseInt(ethereum2USDprice,0);
        // check which stage is open (pre-ico or ico)
        if (stage == Stages.PREICO && now <= preico_enddate){
            require(balances[this] != _totalsupply.sub(TotalPREICOSupply));
            // pre-ico is open
            currentTokenPriceFactor = (block.timestamp.sub(preico_startdate)).div(604800); // 1 week time period in seconds
            if (currentTokenPriceFactor== 0)       // week 1 
                _setPriceFactor(10, ETHUSD);                     
            else if (currentTokenPriceFactor == 1) // week 2
                 _setPriceFactor(11, ETHUSD);                    
            else if (currentTokenPriceFactor ==2 ) // week 3
                 _setPriceFactor(12, ETHUSD);                      
            else if (currentTokenPriceFactor == 3) // week 4
                 _setPriceFactor(13, ETHUSD);                      
        }
        else  if (stage == Stages.ICO ){
            require(balances[this] != _totalsupply.sub(TotalICOSupply.add(TotalPREICOSupply)));
            _setPriceFactor(15, ETHUSD); // ICO started
        } 
        else {
            revert();
        }
    }
  
    function _setPriceFactor(uint cents, uint256 ETHUSD) internal {
      uint256 ETHUSD2CENTS = ETHUSD.mul(100); // convert USD price per ethers to cents
      uint256 tokenRatePerWei = ETHUSD2CENTS.div(cents); // calculates the rate of the tokens to be given per wei, checking the rate in cents  
      rate = tokenRatePerWei;
  }
  
    function _processPurchase(address _beneficiary, uint256 _tokenAmount) internal {
        _deliverTokens(_beneficiary, _tokenAmount);
    }
  
    function _forwardFunds() internal {
        wallet.transfer(address(this).balance);
    }
    
    function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal {
        _transfer(_beneficiary,_tokenAmount);
    }
    // called by the owner, pause ICO
    function StopICO() external onlyOwner  {
        stopped = true;

    }

    // called by the owner , resumes ICO
    function releaseICO() external onlyOwner{
        stopped = false;
    }
    
    function setEthmainAddress(address newEthfundaddress) external onlyOwner{
        wallet = newEthfundaddress;
    }
 
    function start_PREICO() external onlyOwner atStage(Stages.NOTSTARTED){
        stage = Stages.PREICO;
        stopped = false;
        preico_startdate = now;
        preico_enddate = now + 28 days; //time period for preICO = 4 weeks
    }
    
    function start_ICO() external onlyOwner atStage(Stages.PREICO){
        stage = Stages.ICO;
        stopped = false;
        ico_startdate = now;
    }

    function end_ICO() external onlyOwner atStage(Stages.ICO){
        stage = Stages.ENDED;
        lockstatus = false;
        
    }
    
   // This function can be used by owner in emergency to update running status parameter
    function removeLocking(bool RunningStatusLock) external onlyOwner{
        lockstatus = RunningStatusLock;
    }

    // what is the total supply of the ech tokens
    function totalSupply() public view returns(uint256 total_Supply) {
        total_Supply = _totalsupply;
    }

    // What is the balance of a particular account?
    function balanceOf(address _owner)public view returns(uint256 balance) {
        return balances[_owner];
    }

    // Send _value amount of tokens from address _from to address _to
    // The transferFrom method is used for a withdraw workflow, allowing contracts to send
    // tokens on your behalf, for example to "deposit" to a contract address and/or to charge
    // fees in sub-currencies; the command should fail unless the _from account has
    // deliberately authorized the sender of the message via some mechanism; we propose
    // these standardized APIs for approval:
    function transferFrom(address _from, address _to, uint256 _amount)public returns(bool success) {
        require(_to != 0x0);
        require(balances[_from] >= _amount && allowed[_from][msg.sender] >= _amount && _amount >= 0);
        balances[_from] = (balances[_from]).sub(_amount);
        allowed[_from][msg.sender] = (allowed[_from][msg.sender]).sub(_amount);
        balances[_to] = (balances[_to]).add(_amount);
        Transfer(_from, _to, _amount);
        return true;
    }

    // Allow _spender to withdraw from your account, multiple times, up to the _value amount.
    // If this function is called again it overwrites the current allowance with _value.
    function approve(address _spender, uint256 _amount)public returns(bool success) {
        require(_spender != 0x0);
        require( !lockstatus);
        allowed[msg.sender][_spender] = _amount;
        Approval(msg.sender, _spender, _amount);
        return true;
    }

    function allowance(address _owner, address _spender)public view returns(uint256 remaining) {
        require(_owner != 0x0 && _spender != 0x0);
        return allowed[_owner][_spender];
    }
    
    // Transfer the balance from owner's account to another account
    function transfer(address _to, uint256 _amount) public returns(bool success) {
       
       if ( lockstatus && msg.sender == owner) {
            require(balances[msg.sender] >= _amount && _amount >= 0);
            balances[msg.sender] = balances[msg.sender].sub(_amount);
            balances[_to] += _amount;
            Transfer(msg.sender, _to, _amount);
            return true;
        }
      
          else if(!lockstatus)
         {
           require(balances[msg.sender] >= _amount && _amount >= 0);
           balances[msg.sender] = (balances[msg.sender]).sub(_amount);
           balances[_to] = (balances[_to]).add(_amount);
           Transfer(msg.sender, _to, _amount);
           return true;
          }

        else{
            revert();
        }
    }

    //In case the ownership needs to be transferred
	function transferOwnership(address newOwner)public onlyOwner{
	    require( newOwner != 0x0);
	    balances[newOwner] = (balances[newOwner]).add(balances[owner]);
	    balances[owner] = 0;
	    owner = newOwner;
	    Transfer(msg.sender, newOwner, balances[newOwner]);
	}
    
    function _transfer(address _to, uint _tokens) internal returns (bool success){
        // prevent transfer to 0x0, use burn instead
        require(_to != 0x0);
        require(balances[this] >= _tokens);
        require(balances[_to] + _tokens >= balances[_to]);
        balances[this] = balances[this].sub(_tokens);
        balances[_to] = balances[_to].add(_tokens);
        Transfer(this,_to,_tokens);
        return true;
    }
    
    function freeTokens(address receiver, uint tokenAmount) external onlyOwner {
        require(balances[this] != 0);
        _transfer(receiver,tokenAmount.mul(ETH_DECIMALS));
    }
    
    function drainFunds() external onlyOwner {
        _forwardFunds();
    }
}